White Aluminium Oxide/White fused alumina is made by Aluminium Oxide powder which is electrically fused at high temperature. It is white. Compared with Brown Aluminium Oxide, its hardness is a little higher, but its toughness is little lower. Our WA has the features of stable quality, well-distributed particle size composition, low magnetic substance content, high bulk density and hardness, good toughness, and high cleanliness, etc.
| Typical Chemical composition | |
| AL2O3 | 99.3%min |
| SiO2 | 0.06% |
| Na2O | 0.3%max |
| Fe2O3 | 0.05%max |
| CaO | 0.04%max |
| MgO | 0.01%max |
| K2O | 0.02#max |
| Typical physical properties | |
| Hardness: | Mohs:9.0 |
| Maximum service temperature: | 1900 ℃ |
| Melting Point: | 2250 ℃ |
| Specific Gravity: | 3.95g/cm3 |
| Volume density | 3.6g/cm3 |
| Bulk density(LPD): | 1.75-1.95 g/cm3 |
| Color: | White |
| Particle shape: | Angular |
| Available size: | |
| FEPA | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 |
| JIS | 240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000# 10000# |
Surface Preparation and Finishing:
One of the primary applications of white fused alumina powder lies in surface preparation and finishing.
Precision Grinding and Cutting:
In precision manufacturing, where accuracy is paramount, white fused alumina powder hardness and abrasive properties make it an ideal choice for shaping and refining high-precision components in industries ranging from electronics to medical devices.
Bonded Abrasive Tools:
White fused alumina powder serves as a fundamental component in the production of bonded abrasive tools such as grinding wheels, sharpening stones, and abrasive belts.
Lapping and Polishing:
Industries requiring high levels of surface flatness and optical clarity, such as semiconductor manufacturing and optical lens production, rely on white fused alumina powder for lapping and polishing purposes.